US7169294B2ExpiredUtilityPatentIndex 92

Hydroprocessing catalyst and use thereof

Assignee: NIPPON KETJEN CO LTDPriority: Jan 5, 2001Filed: Dec 20, 2001Granted: Jan 30, 2007

Est. expiryJan 5, 2021(expired)· nominal 20-yr term from priority

Inventors:ABE SATOSHI HINO AKIRA FUJITA KATSUHISA

B01J 23/85B01J 23/883C10G 47/10B01J 35/60B01J 35/651B01J 35/635B01J 35/615B01J 35/647

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Claims

Abstract

The invention pertains to a hydroprocessing catalyst suitable for the conversion of heavy hydrocarbon oils, which comprises 7–20 wt. % of Group VI metal, calculated as trioxide, and about 0.5–6 wt. % of Group VIII metal, calculated as oxide, on a carrier comprising alumina, the catalyst having a surface area of about 100–180 m 2 /g, a total pore volume of about 0.55 ml/g or more, a % PV(>200 Å d) of at least about 50%, a % PV(>1,000 Å d) of at least about 5%, a % PV(100–1,200 Å d) of at least about 85%, a % PV(>4,000 Å d) of about 0–2%, and a % PV(>10,000 Å d) of about 0–1%. The catalyst of the present invention shows improved metals and asphaltene removal, combined with appropriate sulfur, nitrogen, and Conradson carbon removal. Additionally, the catalyst shows a decrease in sediment formation and an improved conversion in ebullating bed operations. In fixed bed operation, the catalyst produces product with an improved storage stability. The invention also pertains to a process for hydroprocessing heavy hydrocarbon feeds with the catalyst according to the invention in fixed bed or ebullating bed operation.

Claims

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1. A hydroprocessing catalyst useful for the conversion of heavy hydrocarbon oils comprising about 7–20 wt. % of Group VI metal, calculated as trioxide, and about 0.5–6 wt. % of Group VIII metal, calculated as oxide, on a carrier comprising alumina, the catalyst having the following physical properties: a surface area of about 100–180 m 2 /g, a total pore volume of about 0.55 ml/g or more, a %PV(&gt;200 Å d) of at least 50%, a %PV(&gt;1,000 Å d) of at least about 5%, a %PV(100–1,200 Å d) of at least about 85%, a %PV(&gt;4,000 Å d) of about 0–2%, and a %PV(&gt;10,000 Å d) of about 0–1%.

2. The catalyst of claim 1 wherein the %PV(&gt;200 Å d) is about 60–80%.

3. The catalyst of claim 1 wherein the %PV(&gt;1,000 Å d) is about 8–30%.

4. The catalyst of claim 1 wherein the %PV(&gt;1,000 Å d) is about 8–25%.

5. The catalyst of claim 1 wherein the carrier consists essentially of alumina with less than about 2.5 wt. % of silica.

6. The catalyst of claim 1 wherein the carrier consists essentially of alumina with less than about 1.5 wt. % of silica.

7. The catalyst of claim 1 wherein the carrier consists essentially of alumina with less than about 0.5 wt. % of silica.

8. The catalyst of claim 1 wherein the Group VI metal is molybdenum and the Group VIII metal is nickel.

9. A process for the hydroprocessing of heavy hydrocarbon feeds comprising contacting a heavy hydrocarbon feed with a hydroprocessing catalyst of claim 1 in the presence of hydrogen at a temperature of about 350–450° C. and a pressure of about 5–25 MPa.

10. The process of claim 9 wherein the temperature is about 400–450° C. and the pressure is about 14–19 MPa.

11. The process of claim 9 wherein the catalyst is in the form of an ebullating bed.

12. The process of claim 9 wherein the catalyst is in the form of a fixed bed.

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